US4114615A - Aerosol inhalation device - Google Patents

Aerosol inhalation device Download PDF

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Publication number
US4114615A
US4114615A US05/749,327 US74932776A US4114615A US 4114615 A US4114615 A US 4114615A US 74932776 A US74932776 A US 74932776A US 4114615 A US4114615 A US 4114615A
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US
United States
Prior art keywords
passage
propellant
medication
inhalation
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/749,327
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English (en)
Inventor
Kjell Ingvar Leopold Wetterlin
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Draco AB
Original Assignee
Draco AB
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Filing date
Publication date
Application filed by Draco AB filed Critical Draco AB
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Publication of US4114615A publication Critical patent/US4114615A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0065—Inhalators with dosage or measuring devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0028—Inhalators using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0091—Inhalators mechanically breath-triggered
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0091—Inhalators mechanically breath-triggered
    • A61M15/0093—Inhalators mechanically breath-triggered without arming or cocking, e.g. acting directly on the delivery valve
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/06—Sprayers or atomisers specially adapted for therapeutic purposes of the injector type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/06—Solids
    • A61M2202/064—Powder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8218—Gas operated
    • A61M2205/8225—Gas operated using incorporated gas cartridges for the driving gas

Definitions

  • the present invention relates to aerosol inhalation devices for application of medication to the respiratory tract.
  • Aerosol inhalation devices are primarily used for local application of medications to the lower parts of the respiratory tract. Such local administration of medication results in rapid response to the medication with a low dosage as compared to systematic administration of the same drug.
  • Aerosol devices for administration of medication must be designed to have suitable spraying properties, which are reproducible during the useful lifetime of the inhalation device. In order to achieve uniform spraying properties, it is neccessary for the propellant pressure of the device to remain constant. The propellant pressure should be also selected to be adequate to produce a fine spray. If spray particles are excessively large, they will be deposited primarily in the oral cavity or upper respiratory tract.
  • Prior inhalation devices have further disadvantages since the permanent mounting of the dispensing apparatus to the medication container results in the disposal of the rather expensive dispensing apparatus when the container is empty. Further, the available pressure in these units is limited by the container to no more than 0.5 X10 6 Pascals. (5000 gm/cm 2 ) This is a distinct disadvantage, since higher propellant pressure can produce in a more finely divided aerosol spray, resulting in more rapid propellant evaporation and more uniform medication distribution within the respiratory tract.
  • Another problem with prior aerosol devices is that they are susceptible to excess use by the patient. These devices permit medication to be applied with each breath and contain sufficient medication for approximately 200-400 inhalations. The patient may therefore tend to apply more medication than is appropriate.
  • an aerosol inhalation device for dispensing a unit dosage of medication upon each activation.
  • the device includes a propellant container, a propellant metering chamber, a container for holding a unit dosage of the medication and an inhalation outlet.
  • a propellant passage is provided interconnecting the metering chamber, the container and the outlet.
  • a valve alternately connects the metering chamber with the propellant container and the propellant passage.
  • the device includes a reservoir chamber adjacent the metering chamber and connected to the propellant container.
  • the valve means includes a displaceable valve member having a passage which connects the metering chamber and the reservoir chamber in a first position and connects the metering chamber with the propellant passage in a second position.
  • the valve member may be equipped with a spring for returning it to the first position after activation.
  • the propellant container may be equipped with a penetrable membrane which is opened upon activation of a perforating member on the inhalation device.
  • the propellant container may be enclosed in a protective case and sealed against the remaining portions of the inhalation device to prevent leakage.
  • a locking plate may be provided to prevent removal of the protective cover without release of pressure.
  • the inhalation outlet may include a piston, activated by patient breathing and connected to activate a discharge of a measured amount of propellant.
  • the inhalation outlet may be provided with a medication container having a capillary passage opening adjacent the opening of the propellant passage.
  • the propellant passage may be directed into a medication container and thence to the inhalation outlet. Portions of the aerosol inhalation device may also be used as a propellant and dispensing unit for other aerosol applications.
  • FIG. 1 is a cross-sectional view of a liquid medication inhalation device in accordance with the present invention.
  • FIG. 2 is a cross-sectional view of a powdered medication inhalation device in accordance with the present invention.
  • FIG. 3 is a cross-sectional view of a breathing activated liquid medication inhalation device in accordance with the present invention.
  • FIG. 4 is a cross-sectional view of a breathing activated powdered medication inhalation device in accordance with the present invention.
  • the inhalation device illustrated in FIG. 1 includes a propellant container 2 which is initially filled with a liquid propellant, such as liquid carbon dioxide.
  • Propellant container 2 is arranged within a protective cover 1 which is threaded onto the main body 9 of the inhalation device.
  • the bottom portion of container 2 is equipped with a membrane, which may be perforated by activation of a moveable perforating pin 6.
  • Container 2 and pin 6 are sealed to the body 9 of the inhalation device by O-rings 3, 4, and 5.
  • O-ring 5 is maintained in position against pin 6 by retaining ring 11.
  • the perforated opening at the bottom of the propellant container 2 communicates with a reservoir chamber 35.
  • a propellant metering chamber 17 which has a volume, regulated by sleeve 13, which corresponds to the appropriate amount of liquid propellant required for activation of the aerosol device to supply a single dose of medication to the patient.
  • a propellant passage 22 interconnects metering chamber 17 with inhalation outlet 23, which is arranged for insertion in the patient's mouth and may be vented to permit breathing.
  • a valve member 16 connected to passage 22 is centrally arranged in chamber 17 and is movable in a vertical direction in FIG. 1. Passage 36 in the upper part of valve member 16 connects chamber 17 with reservoir chamber 35 when valve member 16 is in its lowermost position. When valve member 16 is moved in an upward direction, passage 36 is closed. Further upward movement of the valve member 16 causes a second passage 37 to open into chamber 17 thereby connecting chamber 17 with propellant passage 22 and permitting the liquified propellant in the propellant metering chamber to expand during movement through passage 22 to inhalation outlet 23.
  • valve member 16 Following this activation of valve member 16, the member may be allowed to move in a downward direction under the influence of spring 20 until passage 37 is closed. In its lowermost position, passage 36 will again connect chamber 17 to reservoir chamber 35. O-rings 12, 18, and 21 are provided for sealing valve member 16 and are retained in position by retaining rings 14, 15, and 19. A stop 38 is arranged on propellant passage 22 to engage a portion 27 of body 9 and hold valve 16 in its lowermost position against the propellant pressure acting on valve member 16.
  • the medication to be applied When the medication to be applied is in a liquid form, it may be conveniently supplied in a single dose container 26 which is equipped with capillary tube 24.
  • Container 26 is positioned within protective chamber 25 and arranged so that the upper opening of capillary tube 24 is immediately adjacent the opening of propellant passage 22 in inhalation outlet 23.
  • Activation of the device by upward movement of propellant passage 22 provides a measured amount of propellant from chamber 17 which in passage across the top of capillary 24 draws the unit dosage of medicine from container 26.
  • the position of capillary 24 may be adjusted to achieve optimum spray conditions.
  • passage 22 Upon release, passage 22 returns to the position shown in FIG. 1 permitting a new measured amount of propellant to enter into metering chamber 17 from reservoir 35.
  • the protective cover 1 is locked into position over propellant chamber 2 by locking plate 8.
  • Plate 8 is maintained in position by screw 7 which is threaded into a passage opening into reservoir chamber 35 and sealed with O-ring 10.
  • Protective cover 1 cannot be removed from the inhalation device without unscrewing screw 7 and therefore venting reservoir chamber 35 and propellant container 2. This prevents removal of the protective cover while a dangerous amount of pressure exists within the device. This is necessary because of the relatively high pressure of liquid carbon dioxide, 5 X10 6 Pascal (50000 gm/cm 2 ) at room temperature.
  • propellant chamber 2 is preferably filled with liquid carbon dioxide. Carbon dioxide, when vaporized, presents no hazard to the environment and is safely used without damage to the internal portions of the respiratory tract.
  • FIG. 2 shows an alternate embodiment of the invention wherein the medication container 26 is designed for use with powdered medication.
  • the container 26 is arranged within a protective cover 25.
  • Propellant passage 22 enters the container in a manner such that the propellant vapors drive the powder up the remaining portion of propellant passage 22 into inhalation outlet opening 23.
  • Outlet 23 is provided with a protective member 31 in the form of hemispherical body which is arranged to prevent large agregate particles of medication from being driven into the respiratory passage.
  • Container 26 may be an open capsule as illustrated or may be a closed capsule which is perforated upon insertion into the device.
  • valve member 16 is arranged to connect reservoir chamber 35 with metering chamber 17 when valve member 16 is in the uppermost position and to connect propellant passage 22 with metering chamber 17 when valve member 16 is in the lowermost position.
  • a connecting arm 28 is arranged between valve member 16 and activating arm 30, which is equipped with a spring and connected to piston 34. The end of arm 28 is provided with lug 32 for engaging activating arm 30 and stop 29 for limiting its downward motion.
  • the propellant passage 22 may therefore be equipped with a coupling to a conventional aerosol can so that the can is supplied with additional propellant on each activation of the device.
  • the coupling may be arranged to open the can valve upon connection.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Pulmonology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Medicinal Preparation (AREA)
  • Nozzles (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Plant Substances (AREA)
US05/749,327 1975-12-12 1976-12-10 Aerosol inhalation device Expired - Lifetime US4114615A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7514066A SE408265B (sv) 1975-12-12 1975-12-12 Anordning for koldioxiddriven endosaerosol, avsedd for inhalering
SE7514066 1975-12-12

Publications (1)

Publication Number Publication Date
US4114615A true US4114615A (en) 1978-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
US05/749,327 Expired - Lifetime US4114615A (en) 1975-12-12 1976-12-10 Aerosol inhalation device

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US (1) US4114615A (da)
JP (1) JPS5273595A (da)
AR (1) AR210623A1 (da)
AT (1) ATA908176A (da)
AU (1) AU503597B2 (da)
BE (1) BE849258A (da)
BR (1) BR7608265A (da)
CA (1) CA1055448A (da)
CH (1) CH608966A5 (da)
DD (1) DD127758A5 (da)
DE (1) DE2654019A1 (da)
DK (1) DK556976A (da)
ES (2) ES454173A1 (da)
FI (1) FI59207C (da)
FR (1) FR2334424A1 (da)
GB (1) GB1562098A (da)
GR (1) GR61788B (da)
HU (1) HU181864B (da)
IE (1) IE43895B1 (da)
IT (1) IT1069978B (da)
LU (1) LU76362A1 (da)
NL (1) NL7613754A (da)
NO (1) NO143397C (da)
NZ (1) NZ182804A (da)
PL (1) PL110912B1 (da)
SE (1) SE408265B (da)
SU (1) SU906349A3 (da)
YU (1) YU302376A (da)
ZA (1) ZA767039B (da)

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US5542411A (en) * 1989-11-01 1996-08-06 Novo Nordisk A/S Manually operated dispenser for dispensing a predetermined amount of powdered substance
US5740794A (en) * 1994-09-21 1998-04-21 Inhale Therapeutic Systems Apparatus and methods for dispersing dry powder medicaments
US6125844A (en) * 1998-04-30 2000-10-03 Westwood Biomedical Portable oxygen based drug delivery system
WO2000072904A1 (en) * 1999-05-28 2000-12-07 Inhale Therapeutic Systems, Inc. Apparatus and method for dispensing metered amount of aerosolized medication
WO2001043800A1 (en) 1999-12-15 2001-06-21 Glaxo Group Limited Inhalation delivery apparatus and method
US6257233B1 (en) 1998-06-04 2001-07-10 Inhale Therapeutic Systems Dry powder dispersing apparatus and methods for their use
WO2002024261A2 (en) * 2000-09-25 2002-03-28 Evit Laboratories, Inc. Shock wave aerosolization apparatus and method
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US20030230303A1 (en) * 2002-01-15 2003-12-18 Nichols Walter A. Aerosol generator for drug formulation
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US6681767B1 (en) 1991-07-02 2004-01-27 Nektar Therapeutics Method and device for delivering aerosolized medicaments
US20040050966A1 (en) * 2000-09-25 2004-03-18 Piper Samuel David Shock wave aerosolization apparatus and method
US20040156792A1 (en) * 2002-12-31 2004-08-12 Nektar Therapeutics Pharmaceutical formulation with an insoluble active agent
US20040176391A1 (en) * 2002-12-31 2004-09-09 Nektar Therapeutics Aerosolizable pharmaceutical formulation for fungal infection therapy
US20040206350A1 (en) * 2002-12-19 2004-10-21 Nektar Therapeutics Aerosolization apparatus with non-circular aerosolization chamber
US20040251318A1 (en) * 2001-05-26 2004-12-16 Philip Braithwaite Device
WO2004110536A1 (en) * 2003-06-12 2004-12-23 Britannia Pharmaceuticals Limited Delivery device for a powder aerosol
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US20050236296A1 (en) * 2002-12-30 2005-10-27 Nektar Therapeutics (Formerly Inhale Therapeutic Systems, Inc.) Carry case for aerosolization apparatus
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US20060025355A1 (en) * 2004-06-21 2006-02-02 Nektar Therapeutics Compositions comprising amphotericin B, methods, and systems
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US20070123477A1 (en) * 2004-06-21 2007-05-31 Richard Malcolmson Compositions comprising amphotericin B, methods, and systems
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US7464704B2 (en) 2001-11-23 2008-12-16 Innovata Biomed Limited Medicament delivery assembly
US20090032427A1 (en) * 2005-09-29 2009-02-05 Nektar Therapeutics Receptacles and Kits, Such as for Dry Powder Packaging
US7744925B2 (en) 1994-12-02 2010-06-29 Quadrant Drug Delivery Limited Solid dose delivery vehicle and methods of making same
US20110123626A1 (en) * 2008-05-15 2011-05-26 Novartis Ag Pulmonary delivery of a fluoroquinolone
US8404217B2 (en) 2000-05-10 2013-03-26 Novartis Ag Formulation for pulmonary administration of antifungal agents, and associated methods of manufacture and use
US8511302B2 (en) 2004-04-24 2013-08-20 Innovata Biomed Limited Dose counter mechanisms for medicament delivery devices
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US8974828B2 (en) 2009-03-18 2015-03-10 Incarda Therapeutics, Inc. Unit doses, aerosols, kits, and methods for treating heart conditions by pulmonary administration
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US9550036B2 (en) 2011-03-03 2017-01-24 Impel Neuropharma Inc. Nasal drug delivery device
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US10441537B2 (en) 2017-05-10 2019-10-15 Incarda Therapeutics, Inc. Unit doses, aerosols, kits, and methods for treating heart conditions by pulmonary administration
US10660578B2 (en) 2016-02-01 2020-05-26 Incarda Therapeutics, Inc. Combining electronic monitoring with inhaled pharmacological therapy to manage cardiac arrhythmias including atrial fibrillation
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GB2155906B (en) * 1984-03-19 1987-08-26 Boc Group Plc Method and apparatus for supplying or dispensing a pressurised fluid
FR2667509B1 (fr) * 1990-10-04 1995-08-25 Valois Inhalateur a poudre, dispositif de conditionnement de microdoses de poudre sous forme de bandes adaptees a etre utilisees dans un inhalateur a poudre, et procede de fabrication de ces bandes.
DE19536902A1 (de) 1995-10-04 1997-04-10 Boehringer Ingelheim Int Vorrichtung zur Hochdruckerzeugung in einem Fluid in Miniaturausführung
UA73924C2 (en) 1998-10-09 2005-10-17 Nektar Therapeutics Device for delivering active agent formulation to lungs of human patient
GB2433207B (en) 2006-02-21 2009-01-07 Jianhe Li Active suction actuated inhalers with timing devices
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CA1055448A (en) 1979-05-29
LU76362A1 (da) 1977-06-24
DD127758A5 (de) 1977-10-12
NL7613754A (nl) 1977-06-14
NZ182804A (en) 1979-07-11
JPS5273595A (en) 1977-06-20
FI763565A (da) 1977-06-13
ES464462A1 (es) 1978-09-01
NO764143L (da) 1977-06-14
IE43895B1 (en) 1981-06-17
PL110912B1 (en) 1980-08-30
FI59207C (fi) 1981-07-10
FR2334424B1 (da) 1982-07-02
NO143397B (no) 1980-10-27
GR61788B (en) 1979-01-17
BR7608265A (pt) 1977-12-20
SE408265B (sv) 1979-06-05
IE43895L (en) 1977-06-12
DE2654019A1 (de) 1977-06-23
IT1069978B (it) 1985-03-25
CH608966A5 (da) 1979-02-15
AU2027576A (en) 1978-06-15
ZA767039B (en) 1977-10-26
SU906349A3 (ru) 1982-02-15
BE849258A (fr) 1977-06-10
FR2334424A1 (fr) 1977-07-08
FI59207B (fi) 1981-03-31
ES454173A1 (es) 1978-03-01
NO143397C (no) 1981-02-04
GB1562098A (en) 1980-03-05
DK556976A (da) 1977-06-13
AU503597B2 (en) 1979-09-13
ATA908176A (de) 1982-11-15
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AR210623A1 (es) 1977-08-31
SE7514066L (sv) 1977-06-13

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